Lot 213. An exceptional diamond ring, by Chaumet. Estimate CHF 2,100,000 - CHF 2,600,000. Price realised CHF 3,301,000. Image credit Denis Hayoun Diode SA Geneva.

Lot 213. An exceptional diamond ring, by Chaumet. Estimate CHF 2,100,000 - CHF 2,600,000. Price realised CHF 3,301,000. © Christie's Image Ltd 2013

Set with a cushion-shaped diamond, weighing approximately 32.65 carats, to the bifurcated shoulders and hoop, ring size 6¼, with French assay marks for platinum and gold. Signed Chaumet Paris. 

Accompanied by report no. 15310570 dated 12 September 2013 from the GIA Gemological Institute of America stating that the diamond is F colour, VS2 clarity, and a Diamond Type Classification letter stating that the diamond is Type Ia 

Note: This cushion-shaped diamond was part of a spectacular diamond rivière necklace owned by Mrs Albina Patino. The original collet was detached and added on a hoop by Chaumet.

Christie's. MAGNIFICENT JEWELS. Geneva, 12 November 2013.